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Presented By
Md. Ashraful Islam Talukder
Md. Hannan Talukder
Rakib Hossain
Fowjael Ahamed
Abu Kaiser Mohammad Masum
What is NAT
Public Network Private Network
Class
IP Addresses
From To
Class A 10.0.0.0 10.255.255.255
Class B 172.16.0.0 172.31.255.255
Class C 192.168.0.0 192.168.255.255
Private Network RangeWorking Principles of NAT Device
NAT
Static Dynamic PAT
(Port Address Translation)
What is Static NAT
How does Static NAT works
? What is Dynamic NAT?
How exactly Dynamic NAT worksHow NAT Translation Take Place
What is PAT
How does it work
? Advantages:
? Conserving precious public IP addresses
? Hosts don¡¯t have to expose their private IP
addresses
? Disadvantages:
? Can¡¯t keep track on user if hosts number rises
? A single IP address can¡¯t easily run same type of
public service
? Advantages of NAT:
? Network security
? IP address sharing
? ISP services
? Legally addressing
? Allows multiple devices
? Disadvantages of NAT:
? Complexity
? Switching path delay
? Lack of public IP
? Poor support
? High price
Security Awareness
1. NAT Firewall 2. VPN
Final Words about NAT
Network Address Translation

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Network Address Translation

  • 1. Presented By Md. Ashraful Islam Talukder Md. Hannan Talukder Rakib Hossain Fowjael Ahamed Abu Kaiser Mohammad Masum
  • 2. What is NAT Public Network Private Network Class IP Addresses From To Class A 10.0.0.0 10.255.255.255 Class B 172.16.0.0 172.31.255.255 Class C 192.168.0.0 192.168.255.255 Private Network RangeWorking Principles of NAT Device
  • 3. NAT Static Dynamic PAT (Port Address Translation) What is Static NAT How does Static NAT works
  • 4. ? What is Dynamic NAT? How exactly Dynamic NAT worksHow NAT Translation Take Place
  • 5. What is PAT How does it work ? Advantages: ? Conserving precious public IP addresses ? Hosts don¡¯t have to expose their private IP addresses ? Disadvantages: ? Can¡¯t keep track on user if hosts number rises ? A single IP address can¡¯t easily run same type of public service
  • 6. ? Advantages of NAT: ? Network security ? IP address sharing ? ISP services ? Legally addressing ? Allows multiple devices ? Disadvantages of NAT: ? Complexity ? Switching path delay ? Lack of public IP ? Poor support ? High price Security Awareness 1. NAT Firewall 2. VPN Final Words about NAT